GitHub Visualizer - Enter user/repo and see the project visually
Gitstalk - Discover what your favorite GitHub users are up to
Github Profile Visualizer - Tool for visualizing GitHub profiles
Octoview - The missing preview feature for GitHub
The GitHub Matrix Screensaver - Latest commits from GitHub visualized Matrix-style
xoscope - Xoscope uses the input of your Sound Card, EsounD and/or a ProbeScope/osziFOX and Bitscope-Hardware.